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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions

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TOR No. 1999-021

Threshold of Regulation Exemptions are generally applicable and are effective for the food contact substance (FCS) for the listed intended use regardless of manufacturer or supplier.
Food Contact Substance: Three polymeric diphenyl-methane diisocyanate (PMDI) formulations consisting mainly of PMDI (CAS Reg. No. 9016-87-9) and 4,4'-methylenediphenyl diisocyanate (MDI)(CAS Reg. No. 101-68-8). The three PMDI formulations would contain up to 53% PMDI and 52% MDI.
Use Limitations*: For use as strengthening agents at levels up to 1% by weight in paper and paperboard (coated and uncoated) in contact with aqueous food at temperatures that do not exceed 120°F.
Requestor: Environ on behalf of ICI Polyurethanes

*For references to food types and conditions of use, see Food Types & Conditions of Use for Food Contact Substances.